Omron OMNUC W Series User Manual page 213

System Design and Installation
3-3-3 Regenerative Energy Absorption by External
Regeneration Resistance
If the regenerative energy exceeds the absorption capacity of the Servo Driver by itself,
then external regeneration resistance must be connected. That resistance can be pro-
vided by either an External Regeneration Resistor or an External Regeneration Resist-
ance Unit. A Resistor or Unit can be used alone or in combination with other Resistors/
Units to provide the required regeneration processing capacity.
!
Caution Connect the External Regeneration Resistor or External Regeneration Resistance
Unit between the Servo Driver's B1 and B2 terminals. Check the terminal names
carefully when connecting to the terminals. If the Resistor or Unit is connected to the
wrong terminals it will damage the Servomotor.
Note 1. The External Regeneration Resistor can reach a temperature of approximately 120°C, so
install it at a distance from heat-sensitive devices and wiring. In addition, a radiation shield
must be installed according to the radiation conditions.
Note 2. For external dimensions, refer to 2-9 External Regeneration Resistors/Resistance Units.
H External Regeneration Resistors and External Regeneration
Resistance Units
D Specifications
Model
R88D-RR22047S
External Regeneration
Resistor
R88D-RR88006
(for 200 V, 6 kW)
R88D-RR1K803
(for 200 V, 7.5-11-15 kW)
R88D-RR88018
(for 400 V, 6-7.5 kW)
R88D-RR1K814
(for 400 V, 11-15 kW)
Note The following external regeneration resistors are recommended products from another manufacturer, Iwa-
ki Musen Kenkyujo. For details, refer to the manufacturer's documentation.
RH120N50ΩJ 50 Ω ± 5%
RH300N50ΩJ 50 Ω ± 5%
RH500N50ΩJ 50 Ω ± 5%
AUDIN - 7 bis rue de Tinqueux - 51100 Reims - France - Tel : 03.26.04.20.21 - Fax : 03.26.04.28.20 - Web : http: www.audin.fr - Email : info@audin.fr
Resistance Nominal
capacity
47 Ω ± 5% 220 W
6.25 Ω ± 10% 880 W
3.13 Ω 1760 W
18 Ω 880 W
14.25 Ω 1760 W
70 W (Amount of regeneration at 120°C)
200 W (Amount of regeneration at 120°C)
300 W (Amount of regeneration at 120°C)
Regeneration Heat
absorption at radiation
120°C
70 W t1.0 × j350
(SPCC)
180 W --
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Chapter 3
Thermal
switch output
Operating
temperature:
170°C
NC contact
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3-47